<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- table表格区 -->
            <el-table :data="goodslist" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column prop="goods_name" label="商品名称"></el-table-column>
                <el-table-column prop="goods_price" label="商品价格(元)" width="95px"></el-table-column>
                <el-table-column prop="goods_weight" label="商品重量" width="70px"></el-table-column>
                <el-table-column prop="add_time" label="创建时间" width="140px">
                    <template slot-scope="scope">
                        {{ scope.row.add_time | dataFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-tooltip effect="dark" content="修改" placement="top-start">
                        <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                        </el-tooltip>

                        <!-- 删除按钮 -->
                        <el-tooltip effect="dark" content="删除" placement="top-start">
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[10, 20, 50, 100]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        return {
            queryInfo:{
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            // 商品列表
            goodslist: [],
            // 总数据条数
            total: 0
        }
    },
    created(){
        this.getGoodsList()
    },
    methods: {
        // 根据分页获取对应的商品列表
        async getGoodsList(){
           const {data: res} = await this.$http.get('goods',{
                params: this.queryInfo
            })
            if(res.meta.status !== 200){
                return this.$message.error('获取商品列表失败')
            }
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        // 监听pagesize改变的事件
        handleSizeChange (newSize) {
            // console.log(newSize)
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        // 监听页码值改变的事件
        handleCurrentChange (newPage) {
            // console.log(newPage)
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        // 删除商品
        async removeById(id){
            console.log(id)
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm(
                '此操作将永久删除该商品, 是否继续?',
                '提示',
                {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
                }
            ).catch(err => err)

            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            // console.log(confirmResult)
            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }

            const { data: res } = await this.$http.delete('goods/' + id)

            if (res.meta.status !== 200) {
                return this.$message.error('删除商品失败！')
            }

            this.$message.success('删除商品成功！')
            this.getGoodsList()
        },

        goAddPage(){
            this.$router.push('/goods/add')
        }
    }
}
</script>

<style lang="less" scoped>

</style>
